Patent US1522523A successfully refreshed from Google Patents.
US1522523A
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Grinding machine
Assignee: MICRO MACHINE Co
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Filing: 1921-07-08
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Granted: 1925-01-13
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Expires: 1941-07-08
Abstract
No abstract record available.
Inventors
- 👤 Horace M Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:33
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/36; B24B5/40; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/5468; B23Q1/5481; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/50; B24B55/00; B24B55/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1928-01-13 | 1928-07-14 | 1929-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-01-13 | 1932-07-14 | 1933-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-01-13 | 1936-07-14 | 1937-01-13 | $7700.00 | Window Closed / Lapsed |